Int8.cc

 
// -*- mode: c++; c-basic-offset:4 -*-
 
// This file is part of libdap, A C++ implementation of the OPeNDAP Data
// Access Protocol.
 
// Copyright (c) 2012 OPeNDAP, Inc.
// Author: James Gallagher <jgallagher@opendap.org>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact OPeNDAP, Inc. at PO Box 112, Saunderstown, RI. 02874-0112.
 
#include "config.h"
 
#include <cassert>
#include <sstream>
 
#include "Byte.h"           // synonymous with UInt8 and Char
#include "Int8.h"
#include "Int16.h"
#include "UInt16.h"
#include "Int32.h"
#include "UInt32.h"
#include "Int64.h"
#include "UInt64.h"
#include "Float32.h"
#include "Float64.h"
#include "Str.h"
#include "Url.h"
 
#include "D4StreamMarshaller.h"
#include "D4StreamUnMarshaller.h"
 
#include "DDS.h"
#include "util.h"
#include "parser.h"
#include "Operators.h"
#include "dods-limits.h"
#include "debug.h"
#include "InternalErr.h"
 
using std::cerr;
using std::endl;
 
namespace libdap {
 
Int8::Int8(const string &n) : BaseType(n, dods_int8_c, true /*is_dap4*/), d_buf(0)
{}
 
Int8::Int8(const string &n, const string &d) : BaseType(n, d, dods_int8_c, true /*is_dap4*/), d_buf(0)
{}
 
Int8::Int8(const Int8 &copy_from) : BaseType(copy_from)
{
    d_buf = copy_from.d_buf;
}
 
BaseType *
Int8::ptr_duplicate()
{
    return new Int8(*this);
}
 
Int8 &
Int8::operator=(const Int8 &rhs)
{
    if (this == &rhs)
        return *this;
 
    static_cast<BaseType &>(*this) = rhs;
 
    d_buf = rhs.d_buf;
 
    return *this;
}
 
unsigned int
Int8::width(bool) const
{
    return sizeof(dods_int8);
}
 
void
Int8::compute_checksum(Crc32 &checksum)
{
        checksum.AddData(reinterpret_cast<uint8_t*>(&d_buf), sizeof(d_buf));
}
 
void
Int8::serialize(D4StreamMarshaller &m, DMR &, /*ConstraintEvaluator &,*/ bool)
{
    if (!read_p())
        read();          // read() throws Error
 
    m.put_int8( d_buf ) ;
}
 
void
Int8::deserialize(D4StreamUnMarshaller &um, DMR &)
{
    um.get_int8( d_buf ) ;
}
 
dods_int8
Int8::value() const
{
    return d_buf;
}
 
bool
Int8::set_value(dods_int8 i)
{
    d_buf = i;
    set_read_p(true);
 
    return true;
}
 
void Int8::print_val(ostream &out, string space, bool print_decl_p)
{
        if (print_decl_p) {
                print_decl(out, space, false);
                out << " = " << (int)d_buf << ";\n";
        }
        else
                out << (int)d_buf;
}
 
bool
Int8::ops(BaseType *b, int op)
{
    // Get the arg's value.
    if (!read_p() && !read())
        throw InternalErr(__FILE__, __LINE__, "This value not read!");
 
    // Get the second arg's value.
    if (!b->read_p() && !b->read())
        throw InternalErr(__FILE__, __LINE__, "This value not read!");
 
    return d4_ops(b, op);
}
 
bool Int8::d4_ops(BaseType *b, int op)
{
    switch (b->type()) {
        case dods_int8_c:
            return Cmp<dods_int8, dods_int8>(op, d_buf, static_cast<Int8*>(b)->value());
        case dods_byte_c:
            return SUCmp<dods_int8, dods_byte>(op, d_buf, static_cast<Byte*>(b)->value());
        case dods_int16_c:
            return Cmp<dods_int8, dods_int16>(op, d_buf, static_cast<Int16*>(b)->value());
        case dods_uint16_c:
            return SUCmp<dods_int8, dods_uint16>(op, d_buf, static_cast<UInt16*>(b)->value());
        case dods_int32_c:
            return Cmp<dods_int8, dods_int32>(op, d_buf, static_cast<Int32*>(b)->value());
        case dods_uint32_c:
            return SUCmp<dods_int8, dods_uint32>(op, d_buf, static_cast<UInt32*>(b)->value());
        case dods_int64_c:
            return Cmp<dods_int8, dods_int64>(op, d_buf, static_cast<Int64*>(b)->value());
        case dods_uint64_c:
            return SUCmp<dods_int8, dods_uint64>(op, d_buf, static_cast<UInt64*>(b)->value());
        case dods_float32_c:
            return Cmp<dods_int8, dods_float32>(op, d_buf, static_cast<Float32*>(b)->value());
        case dods_float64_c:
            return Cmp<dods_int8, dods_float64>(op, d_buf, static_cast<Float64*>(b)->value());
        case dods_str_c:
        case dods_url_c:
            throw Error(malformed_expr, "Relational operators can only compare compatible types (number, string).");
        default:
            throw Error(malformed_expr, "Relational operators only work with scalar types.");
    }
}
 
void
Int8::dump(ostream &strm) const
{
    strm << DapIndent::LMarg << "Int8::dump - ("
    << (void *)this << ")" << endl ;
    DapIndent::Indent() ;
    BaseType::dump(strm) ;
    strm << DapIndent::LMarg << "value: " << d_buf << endl ;
    DapIndent::UnIndent() ;
}
 
} // namespace libdap